SwitchBot Lock Pro I am selling this because I purchased it but have not used it. I opened the box once to take product photos, but it is unused. Product Specifications - Size: 120 x 59 x 83.9mm - Bluetooth Version: Bluetooth 5.0 - Operating Temperature Range: -10°C to 45°C - Battery Capacity: 2900mAh - Supported OS: iOS 12.0+, Android 5.0+ - Weight: 450g - Materials: Magnesium alloy, PC・ABS - Color: Black Product Description We have strived to develop a smart lock that not only "simply makes door locks smart," but also addresses more detailed needs, and focuses on "how to protect safety with a smart lock," leading to a higher level of living. The "Lock Pro" is the culmination of SwitchBot's dedicated technology and development efforts. It redefines the significance of smart locks as "convenient and safe," and is a flagship model that is meticulously crafted in every detail, including compatibility, battery life, standards, and design. Thank you for viewing.